Print Page - XPComment tag malfunctionning

Title: XPComment tag malfunctionning
Post by: Archive on May 12, 2010, 08:54:03 AM

[Originally posted by linne345 on 2007-04-15 15:33:41-07]

I'm using exiftool v6.86 in a batch script from linux to add comments, using the "XPComment" tag.

This allows me to see comments in the file properties under windows as well.

Syntax :

exiftool -XPComment="This is a comment" filename.jpeg

This executes OK, but when I try to look at the properties of the files under windows, the first 2 characters of the comment are replaced by non-printable characters. Only solution for me was to add two "space 0x20" characters before any of my comments - but this is dirty !

++++++++++++dump of the file generated by exiftool (comments not read correctly by WinXP)

Code:

00000000 ff d8 ff e0 00 10 4a 46 49 46 00 01 01 01 01 2c |......JFIF.....,|
00000010 01 2c 00 00 ff e1 00 a2 45 78 69 66 00 00 4d 4d |.,......Exif..MM|
00000020 00 2a 00 00 00 08 00 05 01 1a 00 05 00 00 00 01 |.*..............|
00000030 00 00 00 4a 01 1b 00 05 00 00 00 01 00 00 00 52 |...J...........R|
00000040 01 28 00 03 00 00 00 01 00 02 00 00 02 13 00 03 |.(..............|
00000050 00 00 00 01 00 01 00 00 9c 9c 00 01 00 00 00 40 |...............@|
00000060 00 00 00 5a 00 00 00 00 00 00 01 2c 00 00 00 01 |...Z.......,....|
00000070 00 00 01 2c 00 00 00 01 20 00 20 00 43 00 6f 00 |...,.... . .C.o.|
00000080 6d 00 6d 00 65 00 6e 00 74 00 61 00 69 00 72 00 |m.m.e.n.t.a.i.r.|
00000090 65 00 20 00 61 00 63 00 63 00 65 00 6e 00 74 00 |e. .a.c.c.e.n.t.|

+++++++++ dump of the file after correction under WinXP (edit manually file properties + Apply)

Code:

00000000 ff d8 ff e0 00 10 4a 46 49 46 00 01 01 01 01 2c |......JFIF.....,|
00000010 01 2c 00 00 ff e1 00 9e 45 78 69 66 00 00 49 49 |.,......Exif..II|
00000020 2a 00 08 00 00 00 05 00 1a 01 05 00 01 00 00 00 |*...............|
00000030 4a 00 00 00 1b 01 05 00 01 00 00 00 52 00 00 00 |J...........R...|
00000040 28 01 03 00 01 00 00 00 02 00 00 00 13 02 03 00 |(...............|
00000050 01 00 00 00 01 00 00 00 9c 9c 01 00 3c 00 00 00 |............<...|
00000060 5a 00 00 00 00 00 00 00 2c 01 00 00 01 00 00 00 |Z.......,.......|
00000070 2c 01 00 00 01 00 00 00 43 00 6f 00 6d 00 6d 00 |,.......C.o.m.m.|
00000080 65 00 6e 00 74 00 61 00 69 00 72 00 65 00 20 00 |e.n.t.a.i.r.e. .|
00000090 61 00 63 00 63 00 65 00 6e 00 74 00 75 00 e9 00 |a.c.c.e.n.t.u...|
000000a0 20 00 64 00 65 00 20 00 4c 00 69 00 6e 00 75 00 | .d.e. .L.i.n.u.|

Anybody has a way to use XPComment tag, without the "garbage" characters ?
Ask me if you need a sample full file.

Title: Re: XPComment tag malfunctionning
Post by: Archive on May 12, 2010, 08:54:03 AM

[Originally posted by exiftool on 2007-04-15 15:58:32-07]

Wow. That is scary. I wouldn't use XP to edit meta
information if I was you -- it changed byte ordering
of the EXIF. This is a dangerous and stupid thing to
do.

But more on topic: I dragged out my PC to test this out
myself and can't reproduce your problem under Windows XP
using a big endian ("MM" byte order) image as you did.
(XP does change byte order when I write something though,
I confirmed that -- monumental stupidity).

So perhaps there is something specific with your file.
If you can email it to me I will test it here.
(philharvey66 at gmail.com)

Thanks.

- Phil

ExifTool Forum

ExifTool => Archives => Topic started by: Archive on May 12, 2010, 08:54:03 AM